Quasi-experimental, Correlational, And Naturalistic Designs

30 cards

Chapter 12 


 
  
Created Apr 17, 2012
by
hmw329

 

 
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1
Closed system
 
Important factors that influence environment is controlled by the experimenter
Confident...
2
Open System
 
Participants can be influenced by a number of factors in which the researchers have little...
3
Quasi-experimental designs
 
used to evaluate the impact of a variable on an ongoing process
4
Correlational designs
 
describe the relationship between two variables
5
Naturalistic Observations
 
describe an ongoing process in its natural setting
6
Quasi experimental designs:
Time series design
 
Within-subjects design
Useful when interested in the effects of an event that has happened...
7
Quasi experimental designs:
Interrupted time series design
 
several pretest and posttest measurements
Can add reversal of phenomenon to add confidence...
8
Quasi experimental designs:
Longitudinal designs
 
Time is one of the independent variables (related to time series design)
same participants...
9
Quasi experimental designs:
Nonequivalent control group posttest- only
 
Exp. group         X      ...
10
Quasi-experimental Designs:
Nonequivalent before after design
 
Pretest provides baseline info
Very informative when random assignment is not possible
Used...
11

Test writing productivity, u of s tests program, u of r control group. Whats happening...
 
Both are increasing, so something else is affecting it
Maturation- could just be because...
12
 
No increase with u of r but there is an increase with u of s
Might conclude that the program...
13
 
No increase in u of r but in crease in u of s started out similar
More confidence in the...
14
 
Strongest evidence that program is working
Most confidence in program

15
Quasi experimental designs:
Optimizing nonequivalent before after designs
 
try to get control groups as similar as possible to experimental group
collect as much demographic...
16
Quasi-experimental designs:
Retrospective and ex post facto designs
 
Attempts to use empirical procedures to study something that happened in the past, try to suggest...
17
Quasi-experimental designs:
Comparative time series design
Exx.
 
asses two or more variables at different time periods to see how one variable relates to changes...
18
Why do we use quasi-experimental designs
 
to study interesting events in real world settings that can not be studied in a lab
enhances...
19
Head start study
-Early childhood prgram in the US for preschoolers from low SES homes...
 
Non-equivalent pretest posttest design
20
Employees at an electronics company assessed for job burnout before and after a scheduled vacation
level...
 
Interrupted time-series design
21
 
not maturation because no stead inc or dec
maybe selection by history effects- vacation...
22
Correlational studies
 
Describes a relationship between two variables
does not imply causality, doesnt attempt...
23
Correlation coefficient
factors that influence it
 
stat used for establishing relationship degree
factors:
restricted range, outliers, reliability...
24
Advanced Correlational strategies
 
Regressional analysis
Cross-lagged panel and structural equation analysis
Multielevel...
25
Naturalistic Observations
 
Pay attention and observe
Useful in complex situations
useful when little is known
26
Problems when making observations
 
Reactive behaviour- participant is influenced by presence
Unobtrusive observations- undectected
Selective...
27
When anaylzing observations  what do you do
 
review data several times
look for patterns
evaluate atypical behaviour
evaluate any...
28
Factors to be considered when decideing whether you or not you should conceal your identity...
 
observing highly reactive behaviors
if behaviour will be different then use some consealage
If...
29
Naturalistic observation advantages and disadvantages
 
Adv.:
Describe behavious as it naturally occurs
sutdies behavioural processes over a...
30
Four categories of Behavioural research
 
Descriptive
correlational
quasi-experimental
experimental


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